Mill for rolling disks



Nov. 23, 1943. F. H. ,LE JEUNE 2,334,379

' MILL FOR ROLLING msxs Filed JulyBl, 1941 2 Sheets-Sheet 1 Nov. 23,1943. F. H. Li: JEUNE MILL FOR ROLLING DISKS 2 Shets-Sheet 2 Fil ed July21, 1941 FIG. 2.

I INVENTOR. FRANK H. LEJEUNE ATTORNE s v Patented Nov, 23, 1943 UNITEDSTATES PATENT, OFFICE 1mm, roa ROLLING msxs Frank 11. Le Jenne, Detroit,Micln, assignor to Kelsey-Hayes Wheel Company, Detroit, Mich, acorporation of Delaware Application July 21, 1941, Serial No. 493,437

' Claims.

of contact between-the pairs of rolls and the disk blank convergeradially outwardly of the disk blank and toward the larger ends of therolls.

tion in which provision is made for counteracting the rolling pressureof the rolls by means other than the bearings usually employed forsupporting the rolls,- whereby the strength, size and weight of thebearings may be greatly decreased.

The invention has for a further object to provide a mill having a simpledriving arrangement tor each set of rolls. I

These and other objects of the invention will become apparent from thefollowing description,

taken in connection with the accompanying drawings, in which Figure 1 isa vertical section through a mill embodying my invention;

Figure 2 is a plan view of the lower set of rolls. V The mill, asillustrated, has the base ;I and the upper plate 2 which is supporteduponthe base by the upright rods 3 extending between and fixedlyconnected to the base and upper plate. 4 is an intermediate platebetween the base and upper plate sleeved on' the'rods 3 and adapted tobe reciprocated by means of the piston 5 slidable in the cylinder 6. Asshown, the intermediate plate has a concentric depending flange restingon the head plate 5' which is secured to the upper end of the piston andsleeved on the upright rods. The cylinder is mounted on the base andis-adapted to receive a suitable medium under pressure.

The upper plate 2 and the intermediate plate 4 carry like setsofprocessing rolls which are engageable with-the opposite upper and lowersides of the disk blank to roll and thereby enlarge the same. Each tsetof processing rolls comprises the rolls I, 8 and 9 which are angularlyspaced with respect to the disk blank at equal distances from each otherand are tapered so that difierent portions of their surfaces engageablewith the disk blank move at speeds substantially corresponding to thespeeds of the cor- .ing pins 21.

Each of the rolls I, 8 and 9 is keyed to a spindie 10. The spindles forthe upper set of rolls are journaled in the carrier ll fixedly securedto the lower side of the upper plate 2 and the spindles for the lowerset of rolls are journaled in the carrier l2 fixedly secured to theupper side of the intermediate plate 4. The rolls are keyed to thetapered portions l3 of the spindles, the bodies M of which are journaledin the carriers through the anti-friction bearings l5 and I6 which areconstructed and arranged to take care of both radial and end thrust uponthe rolls.

For'the purpose of counteracting the rolling pressure exerted by therolls of the upper set of rolls on the disk blank, the rolls are engagedby the tapered roll II, the axis of which coincides with that of thedisk blank when mounted in the mill. The roll I! is keyed to the taperedportion l8 0! the spindle i9 which is journaled in the carrier 20fixedly secured to the lower side of the'upper plate 2 concentricallywithin the carrier l'l. Suitable anti-friction bearings 2| and 22betweenthe carrier 20 and the body 23 of the spindle take care of bothradial and end thrust on the roll H. To drive the rolls of the upper setof rolls, each roll has secured thereto a bevel gear 24 by suitablemeans such as the axially extending pins 25. The back-up roll I! alsohas secured thereto the bevel gear 26, the teeth of which mesh with theteeth of the bevel gears 24. The bevel gear 26 is connected to theback-up roll, as shown, by the axially extend- The spindle l9 hassecured to its upper end the shaft 28 which extends upwardly beyond theupper. plate 2 and has secured to its upper end the bevel gear 29 whichis in mesh with the bevel pinion 30 upon the shaft 3| of the electricmotor 32. The motor is supported upon the upper plate 2.

For the purpose of counteracting the rolling pressure exerted by therolls of the lower set oi.

, rolls on the disk blank, the rolls are engaged by responding portionsof the disk blank. The different rolls of one set are opposite thedifferent rolls of the other set so that it might be said that the rollsare arranged in pairs. The lines the tapered roll 33, the axis of whichcoincides with that of the disk blank when mounted in the mill. The roll33 is keyed to thetapered portion 34 of the spindle 35 which isjournaled in the carrier 36 fixedly secured to the upp r side of theintermediate plate 4 concentrically within the carrier l2. As shown,suitable anti-friction bearings 31 and 38 are positioned between thecarrier 36 and the body of the spindle to take care of both radial andend thrust on the roll 33. The rolls of the lower set of rolls aredriven by the bevel gear 38 secured to the back-up roll 33 and havingits teeth meshing with the teeth the disk blank. The spindle 35 hassecured to its lower end the shaft 4| which extends beneath the mainportion of the intermediate plate 4 and has secured to its lower end thebevel gear 42 which is in mesh with the bevel pinion 43 upon the shaft44 of the electric motor 45. The

motor is supported upon the under face of the intermediate plate 4.

The pilot 46 for the disk 'blank is carried by the back-up roll 35,preferably by threading the shank of the pilot into the upper endportion of the back-up roll.

The construction is such that the electric motors are preferably driven,inunison, or at the same rate. The construction is also such that forcounteracting their rolling pressure, and a gear connected to saidpressure counteracting roll and meshing with the gears of said rollscommon to said pressure counteracting roll for revolving said rollscommon to said pressure counteracting roll with said pressurecounteracting roll. a

5. A mill for rolling disks, comprising sets of tapered rolls engageablewith the opposite sides ofa disk blank, a roll common to and engagingthe rolls of each set for'counteracting their rolling pressure, meansfor moving one of said sets and the roll common to the rolls thereoftoward and away from the other set; and a pilot for the disk blankmovable with said movable set.

6. A'mill 'for rolling tapered disks, comprising sets of tapered rollsengageable with the opposite sides of a disk blank, a'roll'between andengaging the rolls of each set for counteracting their rollthe rolls areadapted to operate on the .opposite sides of the disk blank at angularlyspaced zones, and the rolls being arranged in sets and having theirrolling pressure counteracted by central back-up rolls, rolling unitsare, in eflect, formed at the opposite sides of the disk blank inbalanced relation, thereby providing,a strong and substantialconstruction'of mill without the necessity of enlarging andstrengthening the spindles carrying the rolls and the anti-frictionbearings for the spindles.

What I claim as my invention is':

\ l. A mill for rolling disks, comprising sets of rolls engageable withthe opposite sides of a disk blank, the rolls of each set being arrangedin angularly spaced zones, and a revoluble member common to and arrangedcentrally of the rolls of one set for counteracting their rollingpressure.

2. A mill for rolling disks, comprising sets of tapered rolls engageablewith the opposite sides of a disk blank, the rolls of each set beingarranged in angularly spaced zones, one of. said sets being movabletoward and away from the other set, and a roll common to and arrangedcentrally of and engaging the processing faces of the rolls of each setfor counteracting their rolling pressure.

3. A mill for rolling disks, comprising sets of angularly spaced rollsengageable with the opposite sides of a disk blank with the rolls of oneset opposite the rolls of the other set, and a roll 'betweenand arrangedcentrally of and engaging the rolls of each set for counteracting theirrolling pressure.

4. A mill for rolling tapered disks, comprising.

sets of tapered rolls engageable with the opposite sides of a diskblank, 9. gear connected to each of said rolls, a roll common to therolls of one set ing-pressure, plates movable toward and away from eachother and carrying said sets, and a pilot for the plates.

7. A mill for rolling tapered disks, comprising sets of angularly spacedtapered rolls with the rolls of one set opposite the rolls of the otherset and engageable with the opposite sides of a disk blank, rolls havingtheir axes extending generally axially of the disk blank, said lastmentioned rolls being common to and engaging the rolls of each set forcounteracting their rolling pressure, and a pilot for the disk blankassociated with one of said last mentioned rolls and extending generallyaxially.

8. A mill for rolling tapered disks comprising sets of tapered rollsengageable with the opposite sides of a disk blank with each rollcarried at one end only, a roll common to and engaging the processingfaces of'the rolls ofone set for counteracting their rolling pressure, agearconnected to each of said rolls of said last'mentioned set, and agear connected to said pressure counteracting roll and meshing with saidfirst mentioned 4 gears for revolving said rolls of said last mentionedset. T

9. A mill for'rolling disks comprising a set of rolls arranged inangularly spaced zones and engageable with one side of a disk blank,a-revoluble member common-to and'arranged. centrally of said rolls forcounteracting their rolling pressure, and means engageable with theopposite' side of the disk blank for counteracting the pressure of saidset of'rolls on the disk blank.

10. A mill for rolling disks comprising sets of rolls engageable withthe opposite sides 9! a disk blank, the rolls of one set being arrangedin angularly spaced zones, a revoluble member arranged centrally of andengageable with 'said last mentioned rolls for counteracting theirrolling pressure, and means-for revolving said last mentioned rolls andrevoluble member in unison.

FRANK H. JEUNE.

disc blank carried by one of said

